High Pressure Pump
- Turn ignition switch to "OFF" position. Disconnect connector from main relay behind fuse box under dash. Attach jumper wire between 2 Black/Yellow wires.
- Relieve fuel pressure. Disconnect fuel return hose from regulator. Hold measuring cup under fuel hose from regulator. Turn ignition switch to "ON" position for 10 seconds.
- Measure amount of fuel flow. Flow amount should be 7.8 ounces (230 cc). If fuel flow is less than specification, check fuel filter, clogged fuel line, bad pressure regulator.